:root{
  --primary:#1E4A8F;
  --primary-2:#2C5FA8;
  --red:#E53935;
  --blue:#1E88E5;
  --ink:#1c1c1e;
  --ink-2:#404040;
  --ink-3:#6b6b70;
  --line:#e3e5e9;
  --bg:#f5f6f8;
  --card:#ffffff;
  --radius:12px;
  --shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.04);
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  background:var(--bg);color:var(--ink);
  font:15px/1.55 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
  padding-bottom:env(safe-area-inset-bottom);
  -webkit-font-smoothing:antialiased;
}

/* ---------- 顶栏 ---------- */
.topbar{
  position:sticky;top:0;z-index:20;
  display:flex;align-items:center;gap:8px;
  height:52px;padding:0 12px;
  background:var(--primary);color:#fff;
  box-shadow:0 1px 6px rgba(30,74,143,.28);
}
.topbar h1{flex:1;margin:0;font-size:16px;font-weight:600;letter-spacing:.3px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar button{
  background:rgba(255,255,255,.14);border:0;color:#fff;
  width:34px;height:34px;border-radius:9px;
  font-size:19px;line-height:1;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background .15s;
}
.topbar button:active{background:rgba(255,255,255,.3)}
.topbar button[hidden]{display:none}

/* ---------- 主体 ---------- */
.app{max-width:760px;margin:0 auto;padding:12px 12px 24px}
.foot{max-width:760px;margin:0 auto;padding:0 14px 22px;color:var(--ink-3);font-size:11.5px;text-align:center}

.boot{display:flex;flex-direction:column;align-items:center;gap:14px;padding:70px 0;color:var(--ink-3)}
.spinner{width:30px;height:30px;border:3px solid #dfe3ea;border-top-color:var(--primary);
  border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:14px;margin-bottom:10px;
}
.card h2{margin:0 0 10px;font-size:14px;font-weight:600;color:var(--primary)}
.card h3{margin:14px 0 8px;font-size:13px;font-weight:600;color:var(--ink-2)}
.card h3:first-child{margin-top:0}
.card p{margin:6px 0;font-size:13.5px;color:var(--ink-2)}
.card .note{font-size:12px;color:var(--ink-3);line-height:1.6}

/* ---------- 首页 ---------- */
.hero{text-align:center;padding:20px 0 18px}
.hero .t1{font-size:27px;font-weight:700;color:var(--primary);letter-spacing:2px}
.hero .t2{font-size:13px;color:var(--ink-3);margin-top:5px;letter-spacing:1px}

.sect{margin:16px 0 8px;font-size:12.5px;color:var(--ink-3);letter-spacing:.5px}

.grid2{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.grid2 .btn,.grid1 .btn{margin:0}

.btn{
  display:flex;align-items:center;justify-content:center;text-align:center;
  width:100%;min-height:50px;padding:8px 6px;
  background:var(--card);color:var(--ink);
  border:1px solid var(--line);border-radius:10px;
  font-size:14px;font-weight:500;font-family:inherit;
  cursor:pointer;transition:transform .08s,background .15s,border-color .15s;
  margin-bottom:8px;line-height:1.25;
}
.btn:active{transform:scale(.985);background:#eef1f6}
.btn.primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn.primary:active{background:var(--primary-2)}
.btn.small{min-height:38px;font-size:13px;padding:6px 10px;width:auto;display:inline-flex;margin:0}
.btn[disabled]{opacity:.45;cursor:default}
.btn-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}

/* ---------- 号码球 ---------- */
.balls{display:flex;flex-wrap:wrap;gap:5px;align-items:center}
.ball{
  width:29px;height:29px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12.5px;font-weight:600;color:#fff;letter-spacing:0;
  font-variant-numeric:tabular-nums;flex:0 0 auto;
}
.ball.r{background:var(--red)}
.ball.b{background:var(--blue)}
.ball.mut{background:#d8dbe2;color:#5a5f6a}
.ball.lg{width:34px;height:34px;font-size:14px}

/* ---------- 列表 / 表格 ---------- */
.rowlist{display:flex;flex-direction:column;gap:0}
.row{
  display:flex;align-items:center;gap:8px;
  padding:9px 0;border-bottom:1px solid #f0f1f4;
}
.row:last-child{border-bottom:0}
.row .qs{font-size:12.5px;color:var(--ink-3);font-variant-numeric:tabular-nums;
  min-width:66px;flex:0 0 auto}
.row .grow{flex:1;min-width:0}

table.tb{width:100%;border-collapse:collapse;font-size:13px}
table.tb th{
  text-align:left;font-weight:600;font-size:12px;color:var(--ink-3);
  padding:6px 4px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.tb td{padding:6px 4px;border-bottom:1px solid #f2f3f5;color:var(--ink-2);
  font-variant-numeric:tabular-nums}
table.tb td.num,table.tb th.num{text-align:right}
table.tb tr:last-child td{border-bottom:0}
table.tb td.hl{color:var(--primary);font-weight:600}

/* ---------- 条形图 ---------- */
.bars{display:flex;flex-direction:column;gap:3px}
.bar-row{display:flex;align-items:center;gap:7px;font-size:12px}
.bar-row .k{width:26px;flex:0 0 auto;color:var(--ink-2);font-variant-numeric:tabular-nums}
.bar-row .track{flex:1;height:14px;background:#eef0f4;border-radius:4px;overflow:hidden}
.bar-row .fill{display:block;height:100%;border-radius:4px;transition:width .3s ease}
.bar-row .fill.r{background:linear-gradient(90deg,#ef5350,#e53935)}
.bar-row .fill.b{background:linear-gradient(90deg,#42a5f5,#1e88e5)}
.bar-row .fill.g{background:linear-gradient(90deg,#9fb0c4,#8fa3ba)}
.bar-row .v{width:46px;flex:0 0 auto;text-align:right;color:var(--ink-3);
  font-variant-numeric:tabular-nums}

/* ---------- 表单 ---------- */
.field{display:flex;flex-direction:column;gap:5px;margin-bottom:10px}
.field label{font-size:12.5px;color:var(--ink-3)}
.field input,.field select{
  width:100%;height:42px;padding:0 11px;
  border:1px solid var(--line);border-radius:9px;background:#fff;
  font-size:15px;font-family:inherit;color:var(--ink);
  -webkit-appearance:none;appearance:none;
}
.field select{background-image:linear-gradient(45deg,transparent 50%,#8b919c 50%),linear-gradient(135deg,#8b919c 50%,transparent 50%);
  background-position:calc(100% - 17px) 18px,calc(100% - 12px) 18px;
  background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:32px}
.field input:focus,.field select:focus{outline:none;border-color:var(--primary-2);
  box-shadow:0 0 0 3px rgba(44,95,168,.12)}
.hint{font-size:11.5px;color:var(--ink-3)}

/* ---------- 提示条 ---------- */
.tip{
  background:#eef4ff;border-left:3px solid var(--primary-2);
  border-radius:6px;padding:9px 11px;font-size:12.5px;color:#2c4a78;
  line-height:1.6;margin:8px 0;
}
.tip.warn{background:#fff6e8;border-left-color:#e8930c;color:#7a5200}
.tip.ok{background:#eaf7ee;border-left-color:#2e9e57;color:#1f6b3b}

.pill{display:inline-block;padding:2px 8px;border-radius:20px;font-size:11.5px;
  background:#eef1f6;color:var(--ink-2);margin:0 4px 4px 0}
.pill.r{background:#fdeceb;color:#b52d2a}
.pill.b{background:#e9f3fd;color:#1565a8}

.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(104px,1fr));gap:8px}
.kv .item{background:#f7f8fa;border-radius:9px;padding:9px 10px}
.kv .item .k{font-size:11.5px;color:var(--ink-3)}
.kv .item .v{font-size:17px;font-weight:600;color:var(--primary);margin-top:2px;
  font-variant-numeric:tabular-nums}

.mono{font-variant-numeric:tabular-nums}
.center{text-align:center}
.muted{color:var(--ink-3)}
.small{font-size:12px}
.mt8{margin-top:8px}
.mt12{margin-top:12px}
.hidden{display:none!important}

/* ---------- 号码几率折叠项 ---------- */
.oddsList{display:flex;flex-direction:column}
.oddsRow{border-bottom:1px solid #f0f1f4}
.oddsRow:last-child{border-bottom:0}
.oddsRow summary{
  display:flex;align-items:center;gap:0;
  padding:8px 0;cursor:pointer;list-style:none;
  -webkit-user-select:none;user-select:none;
}
.oddsRow summary::-webkit-details-marker{display:none}
.oddsRow summary::marker{content:''}
.oddsRow .detail{
  padding:2px 4px 12px 34px;
  font-size:12.5px;color:var(--ink-2);line-height:1.85;
  border-top:1px dashed #eef0f4;margin-top:2px;padding-top:9px;
}
.oddsRow .detail b{color:var(--ink);font-weight:600}
.oddsRow[open] summary{background:#fafbfc}

code{
  background:#eef1f6;border-radius:4px;padding:1px 5px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:12px;color:#33445e;
}

/* 加载遮罩 */
.loading{display:flex;align-items:center;justify-content:center;gap:9px;
  padding:26px 0;color:var(--ink-3);font-size:13px}
.loading .spinner{width:20px;height:20px;border-width:2px}

@media (min-width:640px){
  body{font-size:15px}
  .app{padding:16px 18px 30px}
}